mcp for Claude Code

io.github.extensiondev/mcp

Build, run, inspect, and publish browser extensions from any MCP client. 30 tools, 11 browsers.

client:Claude Code transport:stdio runtime:npm

Install mcp in Claude Code

run in your project directory

claude mcp add mcp -- npx -y @extension.dev/mcp

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs